Front Tire Change Time

warp9.9 said:
Don't worry my friend some day maybe you will realise being retarded means quit going in to work for the man
Click to expand...

Amigo,
The only "man" I work for be me!
I still enjoy the challenge and my mula comes from attorneys!
 
1olbull said:
Amigo,
The only "man" I work for be me!
I still enjoy the challenge and my mula comes from attorneys!
Click to expand...
So olbull if I run a 240/55/16 on the rear and a 140/75/17 on the front I should get that geometry you are advocating, right? Do you think I will get any ABS codes thrown with that set up? I do think this bike could handle better in the twisties. I actually thing my Indian RM handle the curves better than the Roadster on the OEM tires.
 
Dr.D said:
if I run a 240/55/16 on the rear and a 140/75/17 on the front I should get that geometry you are advocating, right? Do you think I will get any ABS codes thrown with that set up?
Click to expand...

I can answer that - you won't get an ABS code because the differential between the tires is under 5% the ABS system will allow slightly above 5% without any problems, Lots of guys have run this setup on ABS Rockets without an issue. The 130 diameter will throw a code on an ABS bike because the differential is above 6%. It's not a problem with the 140/75 profile.
 

That's what I've been running on my '11 Roadster for the past several tire changes without any code issue. You will see a HUGE difference in handling that might actually take a little getting used to, at first. It takes very little input to steer and almost feels like the bike goes where you "think it" to go. At first I thought I may have made a mistake changing the rake, but now I'd never go back to the original setup with any brand.

New tires coming today, in fact. I had pretty good luck with the Dunlop American Elite (140/75R-17) in the past, but trying the Battlecruise H50 along with the Exedra Max on the rear, as usual.
 

Good question, Doc.
No faults, but if you go down to a 130 front tire you will indeed get an ABS fault that will eliminate ABS but still give you regular brakes.
i tested this on my R3R and know it for a fact.
 
1olbull said:
Good question, Doc.
No faults, but if you go down to a 130 front tire you will indeed get an ABS fault that will eliminate ABS but still give you regular brakes.
i tested this on my R3R and know it for a fact.
Click to expand...
Thank you for your work and reply. I’m going to go with the 140 as I think that will be improvement enough for me.
 

Pretty sure that ALL the combinations are under a 5% Circumference ratio difference.
Stock rear to front ratio is -3.9%
Stock rear with 140/75 front is .7%
Exedra Max rear with 140/75 front is 4.27%
Exedra Max rear with 130/80 front is 4.57%

The key is the total ratio difference, such as OEM -3.9% to Exedra Max & 140 of 4.27% - Differential = 8.17%
That -3.9% to the 130/80 is 4.57 = 8.47%
Therefor, a .3% circumference ratio difference yields an ABS fault.
Basically I would consider anything above 8% dicey and would not increase the difference any more than the 240/55R with 140/75F.
Note that I now run a 150/70 Michelin Road 5 (by far best I have ever run twisties with on the Rocket) however, its 79.38" circumference is the same as the 140/75 and all is bliss!

 
EU law allows +/- 3% per axle so 6% total difference is 100% safe.
It is a small leap of faith. But I endorse the 150/70 argument. It reduces the width and crown radius discrepancies.
I know somebody slotted a 160/70 in up front - but That looks like a serious clearance issue waiting to happen on mine.
Off to do my fist proper Road5 test today. Riding home from the tyre place does not count. Unless I take the Guzzi - tough call tbh.
 
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